Deep dive into oscillations and waves and how to intuitively think about them to use for calculations in study clinical technology of around 15 minutes, discuss the swinging pendulum, simple harmonic motion, different damping types and their significance. Try to include natural frequency into that. Then waves, with their dimension in space and time, what the wave number tells us, how does a wave behave when it encounters a barrier? (maybe include fresnels theorem). 2d and 3d waves, wavefronts, doppler effect, superposition, standing waves, vibration modes, electromagnetic waves. Please discuss each topic lengthy enough to achieve listeners comprehension on all of them.